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USGS ak0218tkh08i

11 Jul 2021, 03:11

Rat Islands, Aleutian Islands, Alaska

A magnitude 5.4 mww earthquake at 1.1 km depth.

Depth1.1 kmPublished hypocentral depth

Tsunami flagNot flaggedUSGS catalog flag, not a current warning

Updated6 May 2023Latest timestamp stored in this record

Published location

Where is Rat Islands, Aleutian Islands, Alaska?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

52.079300, 177.152300

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Map data © OpenStreetMap contributors

What the numbers mean

Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.

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Nearby events with a similar magnitude

Rat Islands, Aleutian Islands, Alaska

south of the Aleutian Islands

195 km SE of Attu Station, Alaska

276 km ESE of Attu Station, Alaska

284 km ESE of Attu Station, Alaska

282 km ESE of Attu Station, Alaska

Catalog fields and provenance

Event ID

ak0218tkh08i

Coordinates

52.0793, 177.1523

Network

ak

Significance

449